Insulated or
Non-Insulated Wiring Ferrules' Suitable Use(*)
Any manufacturer's ferrules are suitable for use provided they are:

A. For use
in factory wiring only, power or control circuits.B.Crimped
with an appropriate tool as recommended by the ferrule manufacturer
before terminating in terminal blocks, wire connectors, or end-product
terminals (such as starters, etc.).C.Sized in
diameter appropriate for the number of wires, wire type
(stranded/solid) and wire size as recommended by the ferrule
manufacturer such that the crimp results in a reliable connection.D. Constructed
such that the length of the wires held captive by the ferrules are
trimmed, if necessary, and that there are no excess live parts, which
can result in the reduction of electrical spacings.

(**) Uninsulated wire connectors may be used in
circuits over 2000 V up through 35,000V where the effects of corona
have been investigated in the end-use application. Uninsulated wire
connectors are not marked with a voltage rating.